SOLUTION: The sum of two number is-11 and their product is -80 what are the two inreger

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Question 990300: The sum of two number is-11 and their product is -80 what are the two inreger
Answer by macston(5194) About Me  (Show Source):
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x and y are 2 numbers
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x+y=-11
x=-11-y
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x*y=-80
(-11-y)(y)=-80
-11y-y^2=-80
0=y^2+11y-80
0=(y+16)(y-5)
y+16=0 OR y-5=0
y=-16 OR y=5
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For y=-16:
x=-11-y=-11-(-16)=5
For y=5
x=-11-5=-16
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ANSWER: The two numbers are 5 and -16.